On Oct 30, 2005, at 10:12 PM, Dinesh Nair wrote:
On 10/31/05 05:56 Andrew Kohlsmith said the following:
No. There is no need because IP<-->IP calls are what is known as
"four wire circuits" -- there is no mixing of the received audio
and the send audio, and thus zero need for an echo canceller. You
only need echo cancellation when you go from a 4-wire circuit to a
two-wire circuit.
which is sometimes the case when echo results from the handset mics
of the IP hardphones. the phone's ec mechanism doesnt always work,
and customers are wont to blame the ip pbx instead of the phones.
--
Well, just in case I did not communicate this well in my original
post, I am 100% clear on the fact that it a problem with the phones/
ATAs. I was not blaming the PBX, I was only hoping for a way solve
the problem using it, since the phones and the IAXys I have them
plugged into offer me no method to fix the problem at the source.
lyd
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